Traction-wheel.



Tfv. BUGKWALTBR.

Y. TRAGTIQN WHEEL;

APPLICATION FILED JAN.4,1912,

1,072,818. Patent-eas'epw, 1913.

.lof Pennsylvania,

provements in Traction-Wheelsfof lwhich UNITED sTATEs ArATinvT TRACY v. BUCKWALTER, 6r ALTooNA, PENNSYLVANIA.

. TnAcTIoN-WHEEL."

To all whom t may concern: v

Be it known that I TRAGY V. BUcKwALTnR, a citizen of -the United/States, residin at Altoona, in the v,county of Blair and' tate i have invented certain Imi the following is a specification..

' steering.

VThis invention elatesL/to traction wheels of the twin tire 'type and/.its primary object is to provide such constructions with independently revoluble tires frthe purpose of facilitating the turning yof the wheels in The-use of traction wheels having broad bearings is desirable in baggagetrucks par- .ticularly,

jectionable and'fthe practicable breadth of` but sucfhguse has been rendered obthe bearlng reduced vby 'reason of the'resistlloy The characteristicv features of my inven-` tion are more fully disclosed in the following description and the accompanying drawings in illustration thereof.

' In thedrawings, Figure 1 is an end view of a truck having wheels *with twin tires mounted according to my invention, and

41 4" ig..2 is a sectional view ltaken through the axis of a wheel.

The mechanism, ask illustrated in the drawings, comprises the beam 1 having vthe fbearings 2 and 2f in combination with the knuckles '3 having the journals 4 and 4. en-A gaged in the respective bearings, each knuckle having the spindle 5 with the bearing rings 6 and 6 -xedthereon Each wheel comprises a "drum, 7 containing the rings 8 and 8', to which the load is transmitted from the spindle by the rollers 9 and -9, which engage the respective rings of the drum and spindl Rims 10 and 10', having vspective tires 'ortreads 12 and 12', are mounted on the drum and revoluble indef, speeicatiqn of Letters Patent.

irregular or thereon the re' PatentedSept.9,1913.

Appneaumi sied January 4,1912. seriainaeeaav.'

pendently i thereon', the rims being heldagainst lateral movementon the inner'end of lthe-drum, which engages by, the -ange v7 the ri1n10, the vplate .13 fixedon the.l outery end of the drum by boltsl, so as'to engage the rim 10", and the ring 14C mountedon the drum between the two rims.

' It will be understood that the foregoing larrang'ement, whereby eachtire can turn on' itsdrum independently, permits the use of any number of tires desirable for providing the wide bearing. appropriate to the load and traction conditions while. avoiding the objectionable friction, wear and resistance, particularly in turning sharply, in steering.

Having described my invention, Iclaim:

1. A traction wheel comprising, in combi` nation with a spindle, a bearing revoluble on said spindle', and a'plurality of treads,

revoluble independently on said bearing.

2. A traction wheel comprising, in comblnation with a spindle, a drum revolublel on said spindle, a plurality of rims revoluble on said drum and tires on the' respective rims speciiied.4 i 3. A traction binationwith a knuckle having a spindle, a drum, anti-friction bearing means 'whereby said dru-m is revolubly mounted on said spindle, a plurality .of ri'ms revoluble independently on said drum','ti`res on the respective rims, and means for holding saidrims in position on said drum.

, 4. A traction wheel comprising, in combination with a spindle having roller beara druml havingrollenv lrollers disposed bei tween the' respective'rings on said spindle` ing ringsz-thereon, bearing rings therein,

andinsaid drum, rims. independently reve' oluble on said drum, tires on the respective rims aforesaid, a separator on said drum between .,said rims, 'and a detachable plate fixed on the outer endofsaid drum to hold said rims-in position, said drun'chaving a flange on the innerfend thereof for holding lsaid rims in position.

ln witness whereof I' havehereunto set my name this 21st`day of- D'ecember, 1911, inl -thepresence of the subscribing witnesses.v A

TRACY v.l -BUcKwAL'TEn Witnesses: Y

' JAMES T. HANLON, H. S. KELLY.

-gioo 

